An authoritative illustrated guide to the long-necked herbivores that roamed the dinosaur world, from the enormous Brontosaurus and Brachiosaurus to their prosauropod ancestorsNew discoveries are transforming our understanding of the sauropod and prosauropod dinosaurs, revealing startling new insights into the lives and look of these awesome herbivores. The Princeton Field Guide to Sauropod and Prosauropod Dinosaurs provides the most up-to-date and comprehensive coverage of the mighty plant eaters that ruled the earth for many tens of millions of years. This incredible guide covers some 275 species and features stunning illustrations of sauropodomorphs of many shapes and sizes. It discusses their history, anatomy, physiology, locomotion, reproduction, growth, size, and extinction, and even gives a taste of what it might be like to travel back to the Mesozoic. This one-of-a-kind guide also discusses the controversies surrounding these marvelous creatures, taking up such questions as the extreme size of the biggest land animals of all time and whether the super long-necked sauropods held their heads as high as multistory buildings. Features detailed species accounts of some 275 sauropod and prosauropod dinosaurs, with the latest size and mass estimatesShares new perspectives on iconic sauropodomorphs such as Plateosaurus and BrontosaurusCovers everything from the biology of sauropods and prosauropods to the colorful history of paleontologyFeatures a wealth of color and black-and-white drawings and figures, including life studies, scenic views, and original skeletal, skull, and muscle reconstructionsIncludes detailed color maps